Home / 13,450.90-20,186.79-9,319.87

Finding the Fourth Proportional to 13,450.90, 20,186.79 and 9,319.87

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Solution

The fourth proportional to 13,450.90, 20,186.79 and 9,319.87 is: 13,987.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.90 : 20,186.79 = 9,319.87 : x
  2. Step 2: Convert to fraction form
    13,450.90/20,186.79 = 9,319.87/x
  3. Step 3: Cross multiply
    13,450.90x = 20,186.79 × 9,319.87
  4. Step 4: Simplify right side
    13,450.90x = 188,138,258.52
  5. Step 5: Solve for x
    x = 188,138,258.52/13,450.90
  6. Step 6: Final answer
    x = 13,987.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.